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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2388595Generated: November 1, 2026

Diazald → HCID 53380072, compound

https://huagongshe.com/reaction/2388595

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiazaldHCID 6628—
ReactantPotassium HydroxideHCID 14797—
ReactantHCID 21225595HCID 21225595—
ReactantHCID 67387399HCID 67387399—
SolventMethanolHCID 887—
ProductHCID 53380072HCID 53380072—

Reaction Steps

The compound was synthesized starting from KOH (15 eq in water), diazald (9 eq), ethylene glycol/Et2O (1/5 v/v, 30 ml), 1-(1H-Benzo[d]imidazol-6-yl)-4-ethyl-5-(2,3-difluorophenyl)-3-hydroxy-1H-pyrrol-2(5H)-one (1.2 g, 2.81 mmol, 1 eq) and MeOH (10 ml), the product was further purified by preparative HPLC; yield: 0.085 g (8.2%); MS m/z: 370.1 [M+H]+; 1H-NMR: (400 MHz, DMSO-D6) δ: 1.01 (t, 3H), 1.94 (m, 1H), 2.39 (m, 1H), 3.96 (s, 3H), 6.24 (s, 1H), 7.12 (s, 1H), 7.55-7.26 (m, 3H), 7.67 (s, 1H), 8.17 (s, 1H), 12.43 (s, 1H); HPLC (METHOD [A]): rt 13.32 min (100%)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08269019B2
Source datasetuspto-grants-2012_09
ORD IDord-d231a26637b2465c9f1868b0e18a8afd
Source noteuspto-grants-2012_09